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| Part Number | MM74HC243N | MM74HC244N | MM74HC240N | MM74HC241N |
|---|---|---|---|---|
| Manufacturer | National Semiconductor | onsemi | Fairchild Semiconductor | National Semiconductor |
| Product Status | Active | Obsolete | Obsolete | Obsolete |
| Logic Type | Buffer, Non-Inverting | Buffer, Non-Inverting | Buffer, Inverting | Buffer, Non-Inverting |
| Number of Elements | 2 | 2 | 2 | 2 |
| Number of Bits per Element | 4 | 4 | 4 | 4 |
| Input Type | - | - | - | - |
| Output Type | - | 3-State | 3-State | 3-State |
| Current - Output High, Low | - | 7.8mA, 7.8mA | 7.8mA, 7.8mA | 7.8mA, 7.8mA |
| Voltage - Supply | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V |
| Operating Temperature | - | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -55°C ~ 125°C (TA) |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole |
| Package / Case | 20-DIP (0.300", 7.62mm) | 20-DIP (0.300", 7.62mm) | 20-DIP (0.300", 7.62mm) | 20-DIP (0.300", 7.62mm) |
| Supplier Device Package | 20-PDIP | 20-PDIP | 20-PDIP | 20-PDIP |
